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【单选题】
如果污泥固体浓度为12％，则其含水率为（ ）A.
35%
B.
76%
C.
78%
D.
88%
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举一反三
【简答题】如何区分原生起源中心和次生起源中心。
【简答题】次生起源中心
【简答题】次生起源中心
【单选题】Product design and process selection are examples of _______ decisions.
A.
financial
B.
tactical
C.
system design
D.
system operation
E.
forecasting
【单选题】●The development process in the software (74) involves four phases: analysis，design,implementation, and testing. (74)
A.
maintenance
B.
lifecycle
C.
programming
D.
upgrading
【简答题】The process in the design process model involves , , , , , 。
【简答题】次生起源中心（secondary origin center）
【单选题】The development process in the software （74） involves four phases: analysis，design, implementation, and testing.
A.
maintenance
B.
lifecycle
C.
programming
D.
upgrading
【单选题】Software design is a(71)process .It requires a certain(72)of flair on the part of the designer. Design can not be learned from a book .It must be practiced and learnt by experience and study of existi...
A.
create
B.
created
C.
creating
D.
creative
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